AlistairCharlton writes: In what must be one of Google's worst kept secrets in recent memory, the second-generation Nexus 7 tablet has been exposed hours before its official unveiling.

Launching last year and manufactured by Asus, the Google Nexus 7 proved there was a viable — and much cheaper — alternative to Apple's iPad.

Now Google is back with what is being called the Nexus 7 2 though in reality we expect Google to stick with the Nexus 7 name as Apple does with new iPad generations.While the tablet won't be official until a press event later today, the tablet has leaked comprehensively across the web, revealing its full HD screen (resolution 1920 x 1200), Android 4.3 Jelly Bean software, NFC and 1.5GHz Snapdragon processor.